Truck bed air mattress



FIG. 1 is a top, front, left side perspective view of a truck bed airmattress, embodying the new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a left side elevation view thereof;

FIG. 5 is a right side elevation view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is bottom plan view thereof.

The broken lines in the figures are for the purpose of illustratingportions of the truck bed air mattress that form no part of the claimeddesign.

CLAIM The ornamental design for a truck bed air mattress, as shown anddescribed.